.page-about {
  background: var(--color-light-bg);
  color: var(--color-navy);
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about .breadcrumb-list {
  max-width: var(--container-wide);
  margin: var(--space-3) auto var(--space-4);
  padding: 0 var(--space-3);
  font-size: 0.85rem;
}

.page-about .section-heading {
  margin-bottom: var(--space-5);
}

.page-about .section-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--color-gold-dark);
  text-transform: uppercase;
  margin-bottom: var(--space-1);
}

.page-about .section-title,
.page-about .section-heading h2 {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.2;
  color: var(--color-navy);
}

.page-about .section-subhead {
  margin-top: var(--space-2);
  color: var(--color-text-subtle);
  max-width: 560px;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-headline);
  font-weight: 700;
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.2s var(--ease);
}

.page-about .btn:hover {
  transform: translateY(-2px);
}

.page-about .btn-primary {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-navy);
  padding: 0.8rem 1.4rem;
}

.page-about .btn-primary:hover {
  box-shadow: 0 0 24px rgba(255, 215, 0, 0.35);
}

.page-about .btn-ghost {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-navy);
  padding: 0.8rem 1.4rem;
}

.page-about .btn-ghost:hover {
  border-color: var(--color-gold-dark);
  color: var(--color-gold-dark);
}

.page-about .btn-arrow {
  font-size: 1.2rem;
  line-height: 1;
}

/* 封面区 */
.page-about .about-cover {
  position: relative;
  background: var(--color-navy);
  color: var(--color-text-light);
  padding: var(--space-5) 0 var(--space-6);
  overflow: hidden;
}

.page-about .about-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 215, 0, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 215, 0, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(135deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.45) 50%, transparent);
  pointer-events: none;
}

.page-about .about-cover::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -60px;
  width: 340px;
  height: 280px;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.18), transparent 70%);
  transform: rotate(14deg);
  border-radius: 36px;
  pointer-events: none;
}

.page-about .about-cover .container-wide {
  position: relative;
  z-index: 2;
}

.page-about .about-cover .breadcrumb-list {
  margin: 0 0 var(--space-5);
  padding: 0;
}

.page-about .about-cover .breadcrumb-link,
.page-about .about-cover .breadcrumb-item {
  color: var(--color-text-subtle);
}

.page-about .about-cover .breadcrumb-item[aria-current="page"] {
  color: var(--color-gold);
}

.page-about .about-cover-grid {
  display: grid;
  gap: var(--space-4);
}

.page-about .about-cover-copy {
  max-width: 640px;
}

.page-about .about-cover-copy h1 {
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  line-height: 1.1;
  margin: var(--space-2) 0;
  color: var(--color-text-light);
}

.page-about .about-cover-copy .section-kicker {
  color: var(--color-gold);
}

.page-about .about-cover-lead {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.7;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-4);
}

.page-about .about-cover-media {
  position: relative;
}

.page-about .about-cover-img {
  width: 100%;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

/* 品牌起源 */
.page-about .about-origin {
  background: var(--color-light-bg);
}

.page-about .about-origin-layout {
  display: grid;
  gap: var(--space-5);
}

.page-about .about-origin-copy {
  max-width: 640px;
  line-height: 1.8;
  color: var(--color-blue);
}

.page-about .about-origin-copy p + p {
  margin-top: var(--space-3);
}

.page-about .about-origin-stats {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(2, 1fr);
}

.page-about .about-stat-card {
  padding: var(--space-4);
  background: var(--color-navy);
  border-radius: var(--radius-lg);
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  box-shadow: 0 16px 40px var(--shadow-card);
}

.page-about .about-stat-num {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--color-gold);
}

.page-about .about-stat-card .card-meta {
  color: var(--color-text-subtle);
}

/* 版本演进 */
.page-about .about-evolution {
  background: var(--color-navy);
  color: var(--color-text-light);
  position: relative;
  overflow: hidden;
}

.page-about .about-evolution::before {
  content: "";
  position: absolute;
  top: 80px;
  left: -80px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(255, 215, 0, 0.1), transparent 70%);
  pointer-events: none;
}

.page-about .about-evolution .container-wide {
  position: relative;
  z-index: 2;
}

.page-about .about-evolution .section-heading h2 {
  color: var(--color-text-light);
}

.page-about .about-timeline {
  position: relative;
  margin-top: var(--space-5);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-gold), var(--color-gold-dark) 40%, rgba(255, 215, 0, 0.2));
}

.page-about .timeline-item {
  position: relative;
  padding-left: 50px;
  margin-bottom: var(--space-4);
}

.page-about .timeline-item:last-child {
  margin-bottom: 0;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 22px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-navy);
  border: 3px solid var(--color-gold);
  box-shadow: 0 0 0 4px rgba(255, 215, 0, 0.2);
}

.page-about .timeline-card {
  background: var(--color-blue);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.page-about .timeline-year {
  display: inline-block;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: var(--space-2);
}

.page-about .timeline-card h3 {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.15rem;
  margin: 0 0 var(--space-2);
  color: var(--color-text-light);
}

.page-about .timeline-card p {
  margin: 0;
  color: var(--color-text-subtle);
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-about .about-evolution-figure {
  margin: var(--space-5) 0 0;
}

.page-about .about-evolution-figure img {
  width: 100%;
  aspect-ratio: 7 / 4;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.page-about .about-evolution-cta {
  margin-top: var(--space-5);
  display: flex;
  justify-content: flex-end;
}

/* 本地站点区 */
.page-about .about-stations {
  background: var(--color-light-bg);
}

.page-about .about-station-map {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 10px;
  max-width: 560px;
  margin: 0 auto var(--space-4);
  padding: var(--space-4);
  background: var(--color-navy);
  border-radius: var(--radius-lg);
}

.page-about .station-dot {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-blue), var(--color-border));
  display: block;
  transition: transform 0.2s var(--ease);
  cursor: default;
}

.page-about .station-dot:hover {
  transform: scale(1.25);
}

.page-about .station-dot.is-new {
  background: radial-gradient(circle, var(--color-gold), var(--color-gold-dark));
  box-shadow: 0 0 16px rgba(255, 215, 0, 0.45);
}

.page-about .about-station-legend {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-4) 0 var(--space-5);
  font-size: 0.9rem;
  color: var(--color-text-subtle);
}

.page-about .legend-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-blue), var(--color-border));
  display: inline-block;
  margin-right: 0.3rem;
}

.page-about .legend-dot.is-new {
  background: radial-gradient(circle, var(--color-gold), var(--color-gold-dark));
  box-shadow: 0 0 8px rgba(255, 215, 0, 0.4);
}

.page-about .about-station-cards {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}

.page-about .station-card {
  padding: var(--space-4);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-light-bg);
}

.page-about .station-card .tag {
  display: inline-block;
  margin-bottom: var(--space-2);
}

.page-about .station-card h3 {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 var(--space-2);
  color: var(--color-navy);
}

.page-about .station-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text-subtle);
  line-height: 1.6;
}

.page-about .about-station-note {
  margin-top: var(--space-4);
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-subtle);
}

.page-about .about-station-cta {
  margin-top: var(--space-4);
  display: flex;
  justify-content: center;
}

/* 安全与资质 */
.page-about .about-security {
  background: var(--color-navy);
  color: var(--color-text-light);
  position: relative;
  overflow: hidden;
}

.page-about .about-security .section-heading h2 {
  color: var(--color-text-light);
}

.page-about .about-security-layout {
  display: grid;
  gap: var(--space-5);
}

.page-about .about-security-media {
  position: relative;
  max-width: 400px;
  margin: 0 auto;
}

.page-about .about-security-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.page-about .about-shield-icon {
  position: absolute;
  top: -22px;
  right: -10px;
  z-index: 3;
  filter: drop-shadow(0 0 14px rgba(255, 215, 0, 0.35));
}

.page-about .about-security-copy {
  max-width: 640px;
}

.page-about .about-security-copy p {
  color: var(--color-text-subtle);
  line-height: 1.8;
}

.page-about .about-security-list {
  margin: var(--space-4) 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.page-about .about-security-list li {
  position: relative;
  padding-left: 1.6rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

.page-about .about-security-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--color-gold);
  transform: rotate(45deg);
}

.page-about .about-security .btn-ghost {
  border-color: var(--color-border);
  color: var(--color-text-light);
}

.page-about .about-security .btn-ghost:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

/* 团队与文化 */
.page-about .about-team {
  background: var(--color-light-bg);
}

.page-about .about-team-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}

.page-about .about-team-card {
  padding: var(--space-4);
  background: var(--color-navy);
  border-radius: var(--radius-lg);
  color: var(--color-text-light);
  border: 1px solid var(--color-border);
}

.page-about .about-team-num {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 700;
  color: var(--color-gold);
  display: block;
  margin-bottom: var(--space-2);
}

.page-about .about-team-card h3 {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0 0 var(--space-2);
  color: var(--color-text-light);
}

.page-about .about-team-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--color-text-subtle);
}

.page-about .about-team-cta {
  margin-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
}

/* 平板及以上 */
@media (min-width: 768px) {
  .page-about .about-cover-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: var(--space-6);
  }

  .page-about .about-cover {
    padding: var(--space-7) 0;
  }

  .page-about .about-origin-layout {
    grid-template-columns: 1fr 0.9fr;
    align-items: start;
    gap: var(--space-6);
  }

  .page-about .about-origin-stats {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .page-about .about-stat-card {
    max-width: 260px;
    margin-left: auto;
  }

  .page-about .about-stat-card:nth-child(2) {
    margin-left: 0;
    margin-right: var(--space-4);
  }

  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .timeline-item {
    width: 50%;
    padding-left: 0;
  }

  .page-about .timeline-item:nth-child(odd) {
    padding-right: 56px;
    text-align: right;
  }

  .page-about .timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-left: 56px;
  }

  .page-about .timeline-item:nth-child(odd)::before {
    left: auto;
    right: -9px;
  }

  .page-about .timeline-item:nth-child(even)::before {
    left: -9px;
  }

  .page-about .about-evolution-figure img {
    width: 72%;
    margin: 0 auto;
  }

  .page-about .about-station-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .page-about .about-security-layout {
    grid-template-columns: 0.8fr 1.2fr;
    align-items: center;
    gap: var(--space-6);
  }

  .page-about .about-security-media {
    margin: 0;
  }

  .page-about .about-team-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
  }

  .page-about .about-team-cta {
    justify-content: flex-start;
  }
}

/* 桌面宽屏 */
@media (min-width: 1100px) {
  .page-about .about-cover-grid {
    gap: var(--space-7);
  }

  .page-about .about-cover-media {
    transform: rotate(1.5deg);
  }

  .page-about .about-cover-img {
    border-radius: 28px;
  }

  .page-about .about-origin-copy {
    font-size: 1.05rem;
  }

  .page-about .timeline-card {
    padding: var(--space-5);
  }

  .page-about .timeline-card h3 {
    font-size: 1.3rem;
  }

  .page-about .timeline-card p {
    font-size: 1rem;
  }

  .page-about .about-station-map {
    gap: 14px;
    padding: var(--space-5);
  }

  .page-about .about-station-cards {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-security-layout {
    gap: var(--space-7);
  }
}